The Investigation Of Liangsan Pig Genetic Resource And Its Conservation And Exploitation

Liangsan pig is a group of the Qianshao pig in Hunan province, it is famous for its streaky pork, effective resistance and disease resistance of forage grass. Not only that, it has good reproductive performance. Because of the slower growth rate than that of foreign breeds, the lower lean meat rate and economic efficiency, not enough protection efforts and inadequate supervision, Liangsan pig breeds is face to deterioration. Therefore it is particularly urgent and important to protect.Through a lot of literature retrieval and in-depth of town to visit, multifaceted panel discussion, the research for pig breed situation, variety resources development and utilization, to find out that Liangsan pig is an excellent breeds resources for developing of characteristic agriculture and increasing farmers’ income. According to the investigation results, policies and measurements for exploitation and protection of Liangsan pig are proposed, the investigation results shows as follow:1. Liangsan pig is the good local varieties of resources. Liangsan pig has a stronger adaptability for the natural conditions and climatic conditions, high fecundity and sexual maturity early prompt average litter size is12.6head; Hybridized with foreign pig breeds Liangsan pig has good combining ability, the hybrids grow faster than pure, and the pork taste delicious; But at present Liangsan pig rapidly reduces the number, we must protect the good local pig breeds, strengthen its genetic resources protection, and intensify the development and utilization.2. The main problems existing in the conservation of Liangsan pig. Liangsan pig breeding industry foundation is weak, scale, intensive breeding development relative lag; Lack of variety registration and management; Lack of protection and exploitation and utilization of long-term planning; Lack of funds, science and technology inadequate investment can not meet the extinction of Liangsan pig; Did not correctly handle the relationship between species preservation and utilization, that seriously affected the pig genetic resources conservation.3. The policies and measures for conservation and utilization of Liangsan pig. Establish seed breeding base, to ensure that the funds and the implementation of a task; Introduction of improved varieties at home and abroad, through hybrid, pure numerous fixed, to improve the production performance of Liangsan pig; Economic hybridization conducted by Liangsan pig, and select the ideal cross combinations; Strengthen the Liangsan pig variety resources survey and appraisal work, promote the understanding of Liangsan pig and the protection of intellectual property rights; To strengthen the development and utilization of Liangsan pig race to promote the conservation.